138377629744919 has 2 divisors, whose sum is σ = 138377629744920. Its totient is φ = 138377629744918.

The previous prime is 138377629744829. The next prime is 138377629745053. The reversal of 138377629744919 is 919447926773831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138377629744919 - 2⁸ = 138377629744663 is a prime.

It is a super-2 number, since 2×138377629744919² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138377629740919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69188814872459 + 69188814872460.

It is an arithmetic number, because the mean of its divisors is an integer number (69188814872460).

Almost surely, 2^{138377629744919} is an apocalyptic number.

138377629744919 is a deficient number, since it is larger than the sum of its proper divisors (1).

138377629744919 is an equidigital number, since it uses as much as digits as its factorization.

138377629744919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456649728, while the sum is 80.

The spelling of 138377629744919 in words is "one hundred thirty-eight trillion, three hundred seventy-seven billion, six hundred twenty-nine million, seven hundred forty-four thousand, nine hundred nineteen".